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This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or
Continuing Education System
education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing or dealing in any material or product. Questions related to specific materials, methods and services will be addressed at the conclusion of this presentation.
Finelite Inc., is a registered provider with The Green Building Certification Institute. This course is USGBC-approved for one GBCI CE hour. LEED Green Associates and LEED AP’s with specialty must self-report all CE hours online through “My Credentials” at www.gbci.org .
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AIA/GBCI LearningObjectives
Study the findings of a recent research project to:
11 Review and understand why we need more 11
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ylight as we age.
Understand how to use luminaires in a new way to achieve energy efficiency, lighting quality, and construction cost goals.
Discuss lighting energy metrics:- Luminaire efficiency - Luminaire distribution effectiveness
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Review the impact of a task low ambient approach on the construction and operating costs.
Review a project where collaboration between the client and design team made task lowambient a reality.
Research Delivers Change
Research Goals Research Results• Achieve 50% electricity savings
• Meet all current standards
• Provide individual user control
• Reduce construction and ti t
• 56% savings in electricity
• IES light levels maintained
• 100% user satisfaction
• Lower installed costs are possibleoperating costs
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• $0.30 per sf operating costs saved annually
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An Important Focus
75%75%75%75%
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By the year 2040, approximately three-quarters (75%)of the built environment will be either new or renovated.
Source: McKinsey + Company 2007
Buildings Have a Big Impact
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2030 Carbon Neutral
The push toward Net-Zero by 2030Energy Independence and Security Act of 2007 for Federal buildings.
Architecture 2030 - all buildings shall be carbon-neutral by 2030
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Key methodology
LPD LPD LPD
Light the Task Light the Vertical Surfaces
Ambient Lighting Power Density
can be Reduced
~ 0.04 w/ft2 ~ 0.04 w/ft2 ~ 0.4 w/ft2
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Key Results Summary
Task Low Ambient Delivers:
• Proper task illumination levels
• Improved user satisfaction
• 50% reduction in energy consumption
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• Reduction in installed and operating costs
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The Benefits of Flexibility
Individual user control 30-70 fc
Fl ibilitFlexibility:• Any Task• Any User• Any Age• Anytime• Anywhere
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LPD~ 0.04 w/ft2
Task Lighting Technology
We were able to document:
Traditional fluorescent task lights place 3 to 4 times more light on the surfaces than is recommended!
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Task Lighting Technology
150 FC @ 24W 60 FC @ 6W
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We were able to document:
Traditional fluorescent task lights place 3 to 4 times more light on the surfaces than is recommended!
150 FC @ 24W @
The Multi-Generational Workforce Is Here to Stay
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The Impact Of ContrastThe following examples show how the decrease in retinal illuminance causesa decrease in the ability of the viewer to see contrast between text and background.
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Physics Supports Task Lighting
The light intensit at 7’ is 1/49 of
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The light intensity at 7’ is 1/49 of what it is at the source.
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LED Task Luminaires Are a Critical Decision
Summary:
• Cut energy use by 50%
• Deliver the right light levels and luminance uniformity
• Make it beautiful
• Achieve strong user preference
• Keep within existing budgets
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Understanding the Criteria
Use the Following Criteria to Properly Light Vertical Services
D fi th hit t th h• Define the architecture through vertical brightness
• Use fixture energy effectively
• Average 20fc on a 50% reflective surface
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LPD~ 0.04 w/ft2
• Use luminaire with a forward throw asymmetric distribution
• Provides uniform overall glow
Wall Washing
• Provides uniform overall glow
20© Copyright 2011 Design Blitz, a California Corporation. All rights reserved.
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• Emphasize texture
Wall Grazing
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• Vertical brightness defines space
• Improves appearance
• Reduces ambient fixture count
• Reduces energy
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Understanding The Criteria
• 30fc maintained ambient
• Uniformity 3:1 max to min in immediate work area
• Lighting Power Density = 0.4 w/ft2
• Use the right amount of fixtures
• Reduce ambient fixture quantity
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LPD0.4 w/ft2
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Luminaire Efficiency Products Must Do More
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Luminaire Efficiency Products Must Do More
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Luminaire Efficiency Products Must Do More
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Application EffectivenessTypical Industry Practice
Ambient: 2T8 on 12’ centers
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• 544 linear feet of ambient luminaires
• Avg. Illuminance: 77fc
• LPD: 0.95 w/ft2
• No user control• 12 power feeds
Standard Layout Example
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Application EffectivenessDo More With Less
Task: 8w LED desk lamp Vertical: (6) 1T8 luminairesAmbient: 1T8 on 16’ centers
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• 420 linear feet of luminaires (vertical + ambient)
• Avg. illuminance: 32fc
• LPD: 0.44 w/ft2
• User control: 30-80fc• 9 power feeds
Task Low Ambient Example
T8 Suspended Luminaires
• 90%+ luminaire efficiency
• 70-80% uplight distribution with widespread optics
• Shielding for downlight distribution
• Luminous element
• Quality construction for clean lines
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High PerformanceRecessed Luminaires
• 80%+ efficiency
• Wide, even distribution for spacing flexibility
• Uniform brightness and visually comfortable
• Easy installation
• Below ceiling accessBelow ceiling access
• Sturdy and low cost construction
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TaskIlluminance (fc)
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Luminance Uniformity Ratios Around Seating Area = 11:1
Across Broad Viewing Areas = 26:132
Meets Targets1
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VerticalIlluminance (fc)
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2
5
2
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Luminance Uniformity Ratios Around Seating Area = 33:1
Across Broad Viewing Areas = 1.3:1
Meets Targets1
Task & VerticalIlluminance (fc)
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Luminance Uniformity Ratios Around Seating Area = 6:1
Across Broad Viewing Areas = 2.2:1
Meets Targets2
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Ambient Only
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Illuminance (fc)
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Luminance Uniformity Ratios Around Seating Area = 5:1
Across Broad Viewing Areas = 0.5:1
Meets Targets26
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Task + Vertical + AmbientIlluminance (fc)
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70
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Luminance Uniformity Ratios Around Seating Area = 2.6:1
Across Broad Viewing Areas = 1.5:1
Meets Targets28
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Energy Savings
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Lower Installed Cost
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National Grid
Collaborative Design Approach
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National Grid
Efficiency Strategies for Lighting Include:
• Pendant luminaires with 1T8 lampon 16’ centers
• 6 watt LED task lamps
Task Low Ambient Approach
Massive energy savings
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44% below ASHRAE 90.1
Double LEED Platinum
National Research Energy Laboratory
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Task Low Ambient Approach
• Toward Net-Zero building• T8 lamps on 16’ spacing• 6w LED Desk lamps
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SHI International
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Task Low Ambient Approach
• 0.6 w/sf for Task, Vertical, and Ambient • 1T8 lamp on 18’ spacing• Recessed and wall mounted vertical illumination• 7.4w Dimmable LED Desk lamps
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Pendant Luminaires on 18’ Centers• 1T8 on 18’ centers
• Pendant indirect/directPendant indirect/direct luminaires 8’ AFF
• 1.18 BF
• Avg. Illuminance: 33 fc
• Task Illuminance: 30-80 fc
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• LPD: 0.51 w/ft2
• 54% below ASHRAE
• Wide spread optic for improved uniformity
LED Task16% of total LPD
T8 Vertical8% of total LPD
T8 Ambient76% of total LPD
Recessed 2x2 Luminaires on 10’ x 10’ spacingOpen Plan Layout
• 3T8 2x2 on 10x10 Spacing3T8 2x2 on 10x10 Spacing
• 0.78 BF for vertical
• 0.90 BF for ambient
• Avg. Illuminance: 26 fc
• Task Illuminance: 30-80 fc
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• Task Illuminance: 30-80 fc
• LPD: 0.49 w/ft2
• 55% below ASHRAELED Task
16% of total LPDT8 Vertical
8% of total LPDT8 Ambient
76% of total LPD
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Recessed 2x2 Luminaires in Private OfficePrivate Office Layout
• 2T8 2x2 in 10x12 office• 2T8 2x2 in 10x12 office
• 1.13 BF for ambient
• Avg. Illuminance: 32 fc
• Task Illuminance: 30-80 fc
LPD 0 68 /ft2
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• LPD: 0.68 w/ft2
• 38% below ASHRAE
For more informationVisit http://cltc.ucdavis.edu/content/view/83/262/
Visit www.finelite.com
Vi it / hVisit www.energy.ca.gov/research
New Buildings Institute – Advanced Lighting Guidelineshttp://www.newbuildings.org/ALG.htm
Emerging Technologies Coordinating Councilhttp://www.etcc-ca.com
LEEDhtt // b /
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http://www.usgbc.org/
IESNAhttp://www.iesna.org/
ASHRAEhttp://www.ashrae.org/
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Thank YouThis concludes our presentation.
For more information, please contact:
Finelite IncFinelite, Inc.30500 Whipple Road
Union City, CA 94587-1530
Ph (510) 441-1100Fax (510) 441-1510
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www.finelite.com